English: Graphing tones as they appeared (or didn't appear) before actions. “Thin squares represent the histogram of tone distribution relative to the movement onset...Note that the timing of intention to move, time T, is estimated to occur about 1.769 seconds before movement onset for this subject (T varied from 0.61 to 2.52 seconds across all subjects considered in the study). The movement genesis starts approximately 2.8 seconds before movement onset. The point of no return P is just 0.105 seconds before movement onset.